CN112038205A - High-current high-breaking fuse - Google Patents
High-current high-breaking fuse Download PDFInfo
- Publication number
- CN112038205A CN112038205A CN202010908918.1A CN202010908918A CN112038205A CN 112038205 A CN112038205 A CN 112038205A CN 202010908918 A CN202010908918 A CN 202010908918A CN 112038205 A CN112038205 A CN 112038205A
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- Prior art keywords
- fusing part
- fuse
- ceramic
- fusing
- ceramic seat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000919 ceramic Substances 0.000 claims abstract description 53
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 14
- 238000009434 installation Methods 0.000 claims abstract description 12
- 235000017060 Arachis glabrata Nutrition 0.000 claims abstract description 9
- 241001553178 Arachis glabrata Species 0.000 claims abstract description 9
- 235000010777 Arachis hypogaea Nutrition 0.000 claims abstract description 9
- 235000018262 Arachis monticola Nutrition 0.000 claims abstract description 9
- 235000020232 peanut Nutrition 0.000 claims abstract description 9
- 239000006004 Quartz sand Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 230000007847 structural defect Effects 0.000 abstract description 2
- 239000002184 metal Substances 0.000 description 15
- 238000010891 electric arc Methods 0.000 description 9
- 230000008033 biological extinction Effects 0.000 description 6
- 230000000694 effects Effects 0.000 description 6
- 238000010586 diagram Methods 0.000 description 4
- 238000004880 explosion Methods 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 3
- 230000001012 protector Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
Images
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/165—Casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/04—Fuses, i.e. expendable parts of the protective device, e.g. cartridges
- H01H85/05—Component parts thereof
- H01H85/055—Fusible members
- H01H85/08—Fusible members characterised by the shape or form of the fusible member
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/20—Bases for supporting the fuse; Separate parts thereof
- H01H85/2045—Mounting means or insulating parts of the base, e.g. covers, casings
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/38—Means for extinguishing or suppressing arc
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H85/00—Protective devices in which the current flows through a part of fusible material and this current is interrupted by displacement of the fusible material when this current becomes excessive
- H01H85/02—Details
- H01H85/38—Means for extinguishing or suppressing arc
- H01H2085/388—Means for extinguishing or suppressing arc using special materials
Abstract
The invention discloses a high-current high-breaking fuse, belongs to the technical field of fuses, and aims to provide the high-current high-breaking fuse which solves the problem that the existing fuse is easy to explode when applied to a high-current environment due to structural defects. It includes fuse-link, ceramic seat, the fuse-link includes fusing part, connects at the left installation department of fusing part, connects the right installation department on fusing part right side, fusing part sets up in ceramic seat, it has arc extinguishing medium to fill in the clearance between fusing part and the ceramic seat, fusing part is peanut shape structure, a plurality of through-holes have been seted up in the fusing part, lie in the through-hole fixed mounting on the ceramic seat and have high-pressure arc extinguishing silicon rubber post, install the fixed lid of pottery on the ceramic seat. The invention is suitable for the high-current high-breaking fuse.
Description
Technical Field
The invention belongs to the technical field of fuses, and particularly relates to a high-current high-breaking fuse.
Background
Fuses are electronic core elements of circuits connected in series in a circuit system; the protection device ensures the safe operation of the circuit under the normal condition and cuts off the circuit under the abnormal condition. The fuse has a wide application range, and is commonly used in circuit systems of military systems such as aerospace, radar stations, ground equipment, underwater equipment, ships, information networks, weaponry and the like.
The high current, strong arc extinguishing ability and small volume are a development direction of fuses, and the application of the fuses in high-power heavy equipment systems (such as heavy armored vehicles, airplanes, tanks and other high-power weaponry) is urgent. The fuse link of the existing domestic fuse is a single linear fuse link, namely the fuse link is a metal wire with uniform thickness and regular shape (as shown in figure 1). The fuse link of the single linear fusing part is applied to a high-current fuse, the cross section area is large, the fuse link is thick, and the quantity of heat generated by the metal of the fuse link along with the metal of the fuse link is in direct proportion to the square of current, the resistance of the fuse link and time when the fuse link is fused in an overload mode and a short circuit mode (the calorific value follows a theoretical formula, Q is I2Rt, where Q is the heating value, I is the current through the fuse link, R is the resistance of the fuse, t is the current through the fuse link time), the fuse link arcing when the fuse link temperature reaches the melting point of the metal; when the thick single linear fuse link is fused at one concentrated point, a large amount of metal vapor is generated and is concentrated and dispersed in the fuse link, the energy is large, explosion is easy to occur, and great potential safety hazards exist.
Disclosure of Invention
The invention aims to: the utility model provides a high disconnected fuse of heavy current height, solves current fuse because of structural defect, the easy problem that explodes of emergence when being applied to heavy current environment.
The technical scheme adopted by the invention is as follows:
the utility model provides a high disconnected fuse of heavy current height, includes fuse-link, ceramic seat, the fuse-link includes fusing part, connects at the left installation department of fusing part, connects the right installation department on fusing part right side, fusing part sets up in ceramic seat, it has the arc extinguishing medium to fill in the clearance between fusing part and the ceramic seat, fusing part is peanut shape structure, a plurality of through-holes have been seted up in the fusing part, lie in the through-hole fixed mounting on the ceramic seat and have high-pressure arc extinguishing silicon rubber post, install the fixed lid of pottery on the ceramic seat.
Further, the arc extinguishing medium is made of quartz sand.
Furthermore, a plurality of threaded holes are formed in the ceramic base, a plurality of mounting holes are correspondingly formed in the ceramic fixing cover, screws matched with the threaded holes are mounted in the mounting holes, and the ceramic fixing cover is in threaded connection with the ceramic base through the screws.
In summary, due to the adoption of the technical scheme, the invention has the beneficial effects that:
1. the fuse comprises a fuse body and a ceramic seat, wherein the fuse body comprises a fusing part, a left installation part connected to the left side of the fusing part and a right installation part connected to the right side of the fusing part, the fusing part is arranged in the ceramic seat, arc extinguishing media are filled in a gap between the fusing part and the ceramic seat, the fusing part is of a peanut-shaped structure, a plurality of through holes are formed in the fusing part, high-voltage arc extinguishing silicon rubber columns are fixedly installed in the through holes in the ceramic seat, and a ceramic fixing cover is installed on the ceramic seat. Through this setting, fusing part is peanut shape structure to set up a plurality of through-holes on fusing part, then form a porous, many breakpoints, peanut shape fusing structure. Under the condition that the cross sectional area of the fuse part is the same as that of the single linear fusing part, the cross sectional area of a single fusing point of the fuse part is far smaller than that of the single linear fusing part, metal vapor generated by arcing of the fusing part is not concentrated any more during overload fusing and short-circuit fusing, the metal vapor is dispersed on different parts of the fuse at the same time, namely the energy at the same point is reduced, the concentrated energy is dispersed, the breaking energy of the instantaneous unit area is reduced, so that explosion is not easy to occur any more, meanwhile, high-voltage arc-extinguishing silicon rubber columns are fixedly arranged in through holes on the ceramic seat, the metal vapor generated by arcing of the fusing part is dispersed on the high-voltage arc-extinguishing silicon rubber columns, so that the energy is greatly reduced, the arc-extinguishing effect is better, quartz sand has higher thermal conductivity and insulating property as an arc-extinguishing medium, has a large contact area with an electric arc, is convenient for absorbing the energy of the electric arc, the arc extinguishing effect is excellent. By means of energy dispersion and double arc extinction, the fuse protector is effectively guaranteed not to explode when being fused, can safely play a role, has strong vibration resistance and impact resistance, has high arc extinction capacity, and can be suitable for a circuit environment with large short-circuit current and serious arc discharge.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and that for those skilled in the art, other relevant drawings can be obtained according to the drawings without inventive effort, wherein:
FIG. 1 is a schematic diagram of a prior art structure;
FIG. 2 is a schematic structural view of the present invention;
FIG. 3 is an external view of the present invention;
FIG. 4 is a schematic view of the fuse link of the present invention;
FIG. 5 is a schematic diagram of a fuse link according to the present invention;
FIG. 6 is a diagram illustrating a state of the fuse link after disconnection;
the labels in the figure are: 1-fuse link, 2-ceramic base, 3-fuse part, 4-left mounting part, 5-right mounting part, 6-arc extinguishing medium, 7-through hole, 8-high voltage arc extinguishing silicon rubber column, 9-ceramic fixing cover and 10-threaded hole.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: reference numerals and letters designate similar items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships that the products of the present invention usually place when in use, and are simply used for simplifying the description of the present invention, but do not indicate or imply that the devices or elements indicated must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.
Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.
In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; mechanical connection or electrical connection can be realized; the two original pieces can be directly connected or indirectly connected through an intermediate medium, or the two original pieces can be communicated with each other. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The utility model provides a high disconnected fuse of heavy current height, includes fuse-link, ceramic seat, the fuse-link includes fusing part, connects at the left installation department of fusing part, connects the right installation department on fusing part right side, fusing part sets up in ceramic seat, it has the arc extinguishing medium to fill in the clearance between fusing part and the ceramic seat, fusing part is peanut shape structure, a plurality of through-holes have been seted up in the fusing part, lie in the through-hole fixed mounting on the ceramic seat and have high-pressure arc extinguishing silicon rubber post, install the fixed lid of pottery on the ceramic seat.
Further, the arc extinguishing medium is made of quartz sand.
Furthermore, a plurality of threaded holes are formed in the ceramic base, a plurality of mounting holes are correspondingly formed in the ceramic fixing cover, screws matched with the threaded holes are mounted in the mounting holes, and the ceramic fixing cover is in threaded connection with the ceramic base through the screws.
In the implementation process of the invention, the fusing part is of a peanut-shaped structure, and a plurality of through holes are arranged on the fusing part, thus forming a multi-hole, multi-breakpoint and peanut-shaped fusing structure. Under the condition that the cross sectional area of the fuse part is the same as that of the single linear fusing part, the cross sectional area of a single fusing point of the fuse part is far smaller than that of the single linear fusing part, metal vapor generated by arcing of the fusing part is not concentrated any more during overload fusing and short-circuit fusing, the metal vapor is dispersed on different parts of the fuse at the same time, namely the energy at the same point is reduced, the concentrated energy is dispersed, the breaking energy of the instantaneous unit area is reduced, so that explosion is not easy to occur any more, meanwhile, high-voltage arc-extinguishing silicon rubber columns are fixedly arranged in through holes on the ceramic seat, the metal vapor generated by arcing of the fusing part is dispersed on the high-voltage arc-extinguishing silicon rubber columns, so that the energy is greatly reduced, the arc-extinguishing effect is better, quartz sand has higher thermal conductivity and insulating property as an arc-extinguishing medium, has a large contact area with an electric arc, is convenient for absorbing the energy of the electric arc, the arc extinguishing effect is excellent. By means of energy dispersion and double arc extinction, the fuse protector is effectively guaranteed not to explode when being fused, can safely play a role, has strong vibration resistance and impact resistance, has high arc extinction capacity, and can be suitable for a circuit environment with large short-circuit current and serious arc discharge.
The fusing change of the fuse link is schematically shown in fig. 6, and it can be seen that the fusing points on the fusing part are melted and thinned until a plurality of parts are broken. The metal vapor generated by the arc flash of the fusing part is not concentrated any more, and is dispersed at different parts of the fuse, namely the energy at the same point is reduced, the concentrated energy is dispersed, and the breaking energy of the instantaneous unit area is reduced.
The arc extinguishing state diagram after the fuse link is disconnected is shown in fig. 7, and it can be seen that when the fuse link is disconnected, the fuse can safely act and cannot explode due to the fact that the arc is extinguished by the high-voltage arc extinguishing silicon rubber column and the arc extinguishing medium.
Example 1
The utility model provides a high disconnected fuse of heavy current height, includes fuse-link, ceramic seat, the fuse-link includes fusing part, connects at the left installation department of fusing part, connects the right installation department on fusing part right side, fusing part sets up in ceramic seat, it has the arc extinguishing medium to fill in the clearance between fusing part and the ceramic seat, fusing part is peanut shape structure, a plurality of through-holes have been seted up in the fusing part, lie in the through-hole fixed mounting on the ceramic seat and have high-pressure arc extinguishing silicon rubber post, install the fixed lid of pottery on the ceramic seat.
Through this setting, fusing part is peanut shape structure to set up a plurality of through-holes on fusing part, then form a porous, many breakpoints, peanut shape fusing structure. Under the condition that the cross sectional area of the fuse part is the same as that of the single linear fusing part, the cross sectional area of a single fusing point of the fuse part is far smaller than that of the single linear fusing part, metal vapor generated by arcing of the fusing part is not concentrated any more during overload fusing and short-circuit fusing, the metal vapor is dispersed on different parts of the fuse at the same time, namely the energy at the same point is reduced, the concentrated energy is dispersed, the breaking energy of the instantaneous unit area is reduced, so that explosion is not easy to occur any more, meanwhile, high-voltage arc-extinguishing silicon rubber columns are fixedly arranged in through holes on the ceramic seat, the metal vapor generated by arcing of the fusing part is dispersed on the high-voltage arc-extinguishing silicon rubber columns, so that the energy is greatly reduced, the arc-extinguishing effect is better, quartz sand has higher thermal conductivity and insulating property as an arc-extinguishing medium, has a large contact area with an electric arc, is convenient for absorbing the energy of the electric arc, the arc extinguishing effect is excellent. By means of energy dispersion and double arc extinction, the fuse protector is effectively guaranteed not to explode when being fused, can safely play a role, has strong vibration resistance and impact resistance, has high arc extinction capacity, and can be suitable for a circuit environment with large short-circuit current and serious arc discharge.
Example 2
On the basis of the embodiment 1, the material of the arc extinguishing medium is quartz sand.
Example 3
On the basis of the embodiment 1, the ceramic base is provided with a plurality of threaded holes, the ceramic fixing cover is correspondingly provided with a plurality of mounting holes, screws matched with the threaded holes are mounted in the mounting holes, and the ceramic fixing cover is in threaded connection with the ceramic base through the screws.
The above description is an embodiment of the present invention. The foregoing is a preferred embodiment of the present invention, and the preferred embodiments in the preferred embodiments can be combined and used in any combination if not obviously contradictory or prerequisite to a certain preferred embodiment, and the specific parameters in the embodiments and examples are only for the purpose of clearly illustrating the verification process of the invention and are not intended to limit the patent protection scope of the present invention, which is subject to the claims and all the equivalent structural changes made by the content of the description and the drawings of the present invention are also included in the protection scope of the present invention.
Claims (3)
1. The utility model provides a high disconnected fuse of big current height, its characterized in that, includes fuse-link (1), ceramic seat (2), fuse-link (1) includes fusing part (3), connects at left installation department (4) on fusing part (3), connects right installation department (5) on fusing part (3) right side, fusing part (3) set up in ceramic seat (2), it has arc extinguishing medium (6) to fill in the clearance between fusing part (3) and ceramic seat (2), fusing part (3) are peanut shape structure, a plurality of through-holes (7) have been seted up on fusing part (3), and it has high-pressure arc extinguishing silicon rubber post (8) to lie in through-hole (7) fixed mounting on ceramic seat (2), install ceramic fixed lid (9) on ceramic seat (2).
2. A high current high breaking fuse according to claim 1, wherein the arc extinguishing medium (6) is quartz sand.
3. A high-current high-breaking fuse according to claim 1, wherein a plurality of threaded holes (10) are formed in the ceramic base (2), a plurality of mounting holes are correspondingly formed in the ceramic fixing cover (9), screws matched with the threaded holes (10) are installed in the mounting holes, and the ceramic fixing cover (9) is in threaded connection with the ceramic base (2) through the screws.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010908918.1A CN112038205A (en) | 2020-09-02 | 2020-09-02 | High-current high-breaking fuse |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010908918.1A CN112038205A (en) | 2020-09-02 | 2020-09-02 | High-current high-breaking fuse |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112038205A true CN112038205A (en) | 2020-12-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010908918.1A Pending CN112038205A (en) | 2020-09-02 | 2020-09-02 | High-current high-breaking fuse |
Country Status (1)
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| CN (1) | CN112038205A (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080122571A1 (en) * | 2006-11-28 | 2008-05-29 | Emerson Electric Co. | Fulgurite reducing fuse |
| CN204102837U (en) * | 2014-09-18 | 2015-01-14 | 友容新源电气（昆山）有限公司 | A kind of new forms of energy fuse-link |
| CN205388965U (en) * | 2016-02-26 | 2016-07-20 | 广东中贝能源科技有限公司 | Arc extinguishing fusible core |
| CN106206204A (en) * | 2016-09-09 | 2016-12-07 | 东莞市贝特电子科技股份有限公司 | A kind of alloy fuse |
| CN107481902A (en) * | 2017-09-29 | 2017-12-15 | 电安科技（嘉兴）有限公司 | Fuse unit and its fuse element |
| WO2019061252A1 (en) * | 2017-09-29 | 2019-04-04 | 电安科技嘉兴有限公司 | Fuse device, and fuse wire element thereof |
| CN208753253U (en) * | 2018-08-22 | 2019-04-16 | 西安中熔电气股份有限公司 | A kind of high breaking fuse suitable for road vehicle industry |
| CN209045479U (en) * | 2018-11-29 | 2019-06-28 | 功得电子工业股份有限公司 | A kind of power fuse structure-improved |
| CN210245444U (en) * | 2018-08-17 | 2020-04-03 | 自力迅达有限公司 | Plate type fuse with high breaking capacity |
| CN111312566A (en) * | 2020-04-01 | 2020-06-19 | 苏州华德电子有限公司 | High I2T high breaking capacity patch current slow-breaking fuse structure and process |
| CN111599659A (en) * | 2019-02-21 | 2020-08-28 | 大东通信机株式会社 | Fuse wire |
-
2020
- 2020-09-02 CN CN202010908918.1A patent/CN112038205A/en active Pending
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20080122571A1 (en) * | 2006-11-28 | 2008-05-29 | Emerson Electric Co. | Fulgurite reducing fuse |
| CN204102837U (en) * | 2014-09-18 | 2015-01-14 | 友容新源电气（昆山）有限公司 | A kind of new forms of energy fuse-link |
| CN205388965U (en) * | 2016-02-26 | 2016-07-20 | 广东中贝能源科技有限公司 | Arc extinguishing fusible core |
| CN106206204A (en) * | 2016-09-09 | 2016-12-07 | 东莞市贝特电子科技股份有限公司 | A kind of alloy fuse |
| CN107481902A (en) * | 2017-09-29 | 2017-12-15 | 电安科技（嘉兴）有限公司 | Fuse unit and its fuse element |
| WO2019061252A1 (en) * | 2017-09-29 | 2019-04-04 | 电安科技嘉兴有限公司 | Fuse device, and fuse wire element thereof |
| CN210245444U (en) * | 2018-08-17 | 2020-04-03 | 自力迅达有限公司 | Plate type fuse with high breaking capacity |
| CN208753253U (en) * | 2018-08-22 | 2019-04-16 | 西安中熔电气股份有限公司 | A kind of high breaking fuse suitable for road vehicle industry |
| CN209045479U (en) * | 2018-11-29 | 2019-06-28 | 功得电子工业股份有限公司 | A kind of power fuse structure-improved |
| CN111599659A (en) * | 2019-02-21 | 2020-08-28 | 大东通信机株式会社 | Fuse wire |
| CN111312566A (en) * | 2020-04-01 | 2020-06-19 | 苏州华德电子有限公司 | High I2T high breaking capacity patch current slow-breaking fuse structure and process |
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Application publication date: 20201204 |
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